Pyroelectric infrared detector and driving method therefor

Details Pyroelectric infrared detector and driving method therefor Pyroelectric infrared detector and driving method therefor

1989-11-03

1991-06-04

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250349, 250350, 250351, H01L 27146

Patent

active

050216600

ABSTRACT:
In a pyroelectric infrared detector, there is provided a member having a slit positioned in front of an array of pyroelectric elements, which interrupts an infrared image which is incident on the pyroelectric element array, and respective pyroelectric elements forming a row of the pyroelectric element array are wired so that they are connected in series electrically and adjacent pyroelectric element generate counter-electromotive forces. An infrared image irradiated on respective pyroelectric elements is scanned successively by the movement of the slit member along a row of the pyroelectric element array, thus obtaining information relating to an infrared intensity distribution from a heat source which emits IR rays which are being irradiated onto respective pyroelectric elements, from time series signals produced at both ends of the pyroelectric element array.

REFERENCES:
patent: 3842276 (1974-10-01), Southgate
patent: 4072863 (1978-02-01), Roundy

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